brother hl-2600cn service manual

7/30/2019 Brother HL-2600cn Service Manual

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Brother Color Laser Printer

SERVICE MANUAL

MODEL: HL-2600CN

Read this manual thoroughly before maintenance work.

Keep this manual in a convenient place for quick and easy reference at all times.

October 2001SM-PRN023


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Copyright Brother 2001All rights reserved.No part of this publication may be reproduced in any form or by any means without permission inwriting from the publisher.Specifications are subject to change without notice.

Trademarks:The brother logo is a registered trademark of Brother Industries, Ltd.

Apple, the Apple Logo, and Macintosh are trademarks, registered in the United States and othercountries, and True Type is a trademark of Apple computer, Inc.Epson is a registered trademark and FX-80 and FX-850 are trademarks of Seiko EpsonCorporation.Hewlett Packard is a registered trademark and HP Laser Jet is a trademark of Hewlett PackardCompany.IBM, IBM PC and Proprinter are registered trademarks of International Business MachinesCorporation.Microsoft and MS-DOS are registered trademarks of Microsoft Corporation.Windows is a registered trademark of Microsoft Corporation in the U.S. and other countries.


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PREFACEThis service manual contains basic information required for after-sales service of the color laserprinter (here-in-after referred to as "this machine" or "the printer"). This information is vital to theservice technician to maintain the high printing quality and performance of the printer.

This service manual covers the HL-2600CN color laser printer.This manual consists of the following chapters:

CHAPTERI : OUTLINE OF PRODUCTFeatures, parts names, internal structure, and description of the control panel.

CHAPTER II: SPECIFICATIONSSpecifications, etc.

CHAPTER III : INSTALLATION

Installation conditions and installation procedures.

CHAPTER IV : STRUCTURE OF SYSTEM COMPONENTS

Basic operation of the mechanical system, the electrical system and the electricalcircuits and their timing information.

CHAPTER V : CONTROL PANEL OPERATION

Operation and setting procedures on the control panel.

CHAPTER VI : PERIODIC MAINTENANCE

Description of periodic maintenance parts, and procedures for periodicreplacement and cleaning.

CHAPTER VII : DISASSEMBLY

Procedures for replacement of the mechanical system parts.

CHAPTER VIII : TROUBLESHOOTING

Description of error messages on the control panel, troubleshooting imagefailure, etc.

APPENDICES : SERIAL NO. DESCRIPTIONS, ETC.

Information in this manual is subject to change due to improvement or re-design of the product. Allrelevant information in such cases will be supplied in service information bulletins (TechnicalInformation).

A thorough understanding of this printer, based on information in this service manual and serviceinformation bulletins, is required for maintaining its print quality performance and for improving thepractical ability to find the cause of problems.


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CONTENTS

CHAPTER I PRODUCT OUTLINE ....................................................I-1

1. FEATURES ..................................................................................................... I-1

2. PARTS NAMES & FUNCTIONS ..................................................................... I-4

3. INTERNAL STRUCTURE................................................................................ I-6

4. DESCRIPTION OF CONTROL PANEL........................................................... I-7

4.1 Video Controller Mode ..........................................................................................................I-7

4.2 Engine Controller Mode ........................................................................................................I-7

CHAPTER II SPECIFICATIONS ......................................................II-1

1. RATING.......................................................................................................... II-1

2. GENERAL SPECIFICATIONS ....................................................................... II-2

2.1. Printing................................................................................................................................II-2

2.2. Functions ............................................................................................................................II-3

2.3. Electrical and Mechanical ...................................................................................................II-3

2.4. Network...............................................................................................................................II-4

2.5. Paper Specification .............................................................................................................II-5

3. ENVIRONMENTAL CONDITION..................................................................... II-9

3.1 Ambient Temperature / Humidity / Altitude ..........................................................................II-9

CHAPTER III INSTALLATION ........................................................III-1

1. CONDITIONS REQUIRED FOR INSTALLATION......................................... III-1

1.1. Environmental Conditions ..................................................................................................III-1

1.2. Basic Layout of Printer Set-up Location.............................................................................III-1

2. UNPACKING................................................................................................. III-2

2.1 Unpacking of Printer ...........................................................................................................III-2

2.2 Unpack the Starter Kit.........................................................................................................III-4

3. INSTALLATION WORK................................................................................. III-5

3.1 Install the Fuser Cleaner and Oil Bottle ..............................................................................III-53.2 Install the OPC Belt Cartridge.............................................................................................III-6

3.3 Install the Toner Cartridge to the Printer.............................................................................III-8

3.4 Test Print.............................................................................................................................III-9

CHAPTER IV STRUCTURE OF SYSTEM COMPONENTS ........... IV-1

1. BASIC STRUCTURE.....................................................................................IV-1

1.1 Print System and Transfer System.................................................................................... IV-6

1.2 Scanning System............................................................................................................. IV-21

1.3 Paper Transportation System .......................................................................................... IV-231.4 Fusing Unit....................................................................................................................... IV-25


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2. STRUCTURE OF THE CONTROL SYSTEM .............................................. IV-27

2.1 Basic Structure................................................................................................................. IV-27

2.2 Control System ................................................................................................................ IV-342.3 Main PCB (Video Controller PCB) ................................................................................... IV-42

2.4 Power Supply Unit ........................................................................................................... IV-56

2.5 High Voltage Power Supply Unit...................................................................................... IV-60

2.6 Wiring Diagram ................................................................................................................ IV-63

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1. PANEL LAYOUT ............................................................................................V-1

2. VIDEO CONTROLLER MODE.......................................................................V-2

2.1 Configuration of Operational Mode..................................................................................... V-2

2.2 Line Test Mode ................................................................................................................... V-3

2.3 DRAM Test Mode ............................................................................................................... V-7

2.4 Test Print Mode................................................................................................................... V-8

2.5 NVRAM Reset Mode........................................................................................................... V-8

3. ENGINE CONTROLLER MODE ....................................................................V-9

3.1 Configuration of Operational Mode..................................................................................... V-9

3.2 Operation of Normal Mode................................................................................................ V-11

3.3 Service Mode.................................................................................................................... V-18

3.4 Adjustment Work Procedures ........................................................................................... V-41

CHAPTER VI PERIODIC MAINTENANCE..................................... VI-1

1. GENERAL .....................................................................................................VI-1

1.1 Handling Precautions......................................................................................................... VI-1

1.2 Periodic Maintenance Cleaning ......................................................................................... VI-4

1.3 Periodic Maintenance Parts and Maintenance Cycle ...................................................... VI-17

2. PERIODIC MAINTENANCE PROCEDURES..............................................VI-20

2.1 OPC Belt Cartridge Replacement .................................................................................... VI-20

2.2 Fusing Unit Replacement................................................................................................. VI-232.3 Transfer Roller 2 Replacement........................................................................................ VI-27

2.4 Paper Discharger Unit Replacement ............................................................................... VI-30

2.5 Drum Cleaner 2 Replacement ......................................................................................... VI-32

2.6 Ozone Filter Replacement ............................................................................................... VI-35

2.7 Paper Pick-up Roller and Separator Pad 2 Replacement................................................ VI-36

2.8 Transfer Drum 2 Replacement......................................................................................... VI-37


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CHAPTER VII DISASSEMBLY .................................................... VII-1

1. BEFORE STARTING DISASSEMBLY .........................................................VII-1

1.1 Precautions ....................................................................................................................... VII-1

1.2 Preparation of Disassembly .............................................................................................. VII-1

2. PARTS NAME..............................................................................................VII-3

2.1 Cover ................................................................................................................................ VII-3

2.2 Circuit Boards (PCBs)....................................................................................................... VII-4

2.3 Motor Units........................................................................................................................ VII-4

2.4 Clutches and Solenoids .................................................................................................... VII-5

2.5 Sensors............................................................................................................................. VII-5

3. DISASSEMBLY FLOW.................................................................................VII-6

4. DISASSEMBLY PROCEDURE ....................................................................VII-7

4.1 Top of the Printer .............................................................................................................. VII-7

4.2 Right Side of the Printer.................................................................................................. VII-20

4.3 Left Side of the Printer .................................................................................................... VII-32

4.4 Paper Exit Unit ................................................................................................................ VII-49

4.5 Front of the Printer .......................................................................................................... VII-56

4.6 Rear of the Printer........................................................................................................... VII-63

4.7 Fusing Unit...................................................................................................................... VII-68

CHAPTER VIII TROUBLESHOOTING......................................... VIII-11. OUTLINE OF TROUBLESHOOTING..........................................................VIII-2

2. OPERATOR CALL ......................................................................................VIII-3

2.1 Video Controller Mode ..................................................................................................... VIII-3

2.2 Engine Controller Mode ................................................................................................... VIII-6

3. PAPER TRANSPORT ERROR ...................................................................VIII-8

3.1 Feed Jam......................................................................................................................... VIII-8

3.2 Inner Jam......................................................................................................................... VIII-9

3.3 Outer Jam ........................................................................................................................ VIII-9

3.4 Others .............................................................................................................................. VIII-9

4. SERVICE CALL.........................................................................................VIII-10

4.1 Video Controller Mode ................................................................................................... VIII-11

4.2 Engine Controller Mode ................................................................................................. VIII-15

5. IMAGE FAILURE.......................................................................................VIII-43

APPENDIX A................................................................................... A-1


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i

REGULATIONS

LASER SAFETY (FOR 110-120 V MODEL ONLY)

This printer is certified as a Class I laser product under the U.S. Department of Health andHuman Services (DHHS) Radiation Performance Standard according to the RadiationControl for Health and Safety Act of 1968. This means that the printer does not producehazardous laser radiation.

Since radiation emitted inside the printer is completely confined within protective housingsand external covers, the laser beam cannot escape from the machine during any phase ofuser operation.

FDA REGULATIONS (FOR 110-120 V MODEL ONLY)

U.S. Food and Drug Administration (FDA) has implemented regulations for laser productsmanufactured on and after August 2, 1976. Compliance is mandatory for productsmarketed in the United States. One of the following labels on the back of the printerindicates compliance with the FDA regulations and must be attached to laser productsmarketed in the United States.

Caution

Use of controls, adjustments or performance of procedures other than those specified inthis manual may result in hazardous radiation exposure.


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IEC 60825 SPECIFICATION (FOR 220-240 V MODEL ONLY)

This printer is a Class 1 laser product as defined in IEC 60825 specifications. The labelshown below is attached in countries where required.

CLASS 1LASER PRODUCTAPPAREIL LASER DE CLASSE 1

LASER KLASSE 1 PRODUKT

This printer has a Class 3B Laser Diode which emits invisible laser radiation in the ScannerUnit. The Scanner Unit should not be opened under any circumstances.

Caution

Use of controls, adjustments or performance of procedures other than those specified inthis manual may result in hazardous radiation exposure.

The following caution label is attached near the scanner unit.

5mW7 8 0 n m - 8 0 0 n m

DANGER- INVISIBLE LASER RADIATION WHEN OPEN.AVOID DIRECT EXPOSURE TO BEAM.

VORSICHT- UNSICHTBARE LASERSTRAHLUNG, WENN ABDECKUNGGEFFNET UND SICHERHEITSVERRIEGELUNG

BERBRCKT. NICHT DEM STRAHL AUSSETZEN.

DANGER- RAYON LASER INVISIBLE LORS DE LOUVER TURE.EVITER LEXPOSITION DIRECTE.

PELIGRO- RADIACION LASER INVISIBLE AL ABRIR. EVITARLA EXPOSICION DIRECTA AL HAZ.

MAS

For Finland and Sweden

LUOKAN 1 LASERLAITE

KLASS 1 LASER APPARAT

Varoitus! Laitteen kyttminen muulla kuin tss kyttohjeessa mainitulla tavalla saattaa

altistaa kyttjn turvallisuusluokan 1 ylittvlle nkymttmlle lasersteilylle.

Varning Om apparaten anvnds p annat stt n i denna Bruksanvisning specificerats,kan anvndaren utsttas fr osynlig laserstrlning, som verskrider grnsen fr laserklass1.


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iii

SAFETY INSTRUCTIONS

SAFETY PRINCIPLE

1) Before starting any operations, read this manual thoroughly. Especially read the safetyinstructions in this section carefully and ensure that you understand the contents.

2) Perform all the operations by following the procedures described in this manual. Follow all thecautions and warnings set out in the procedures and on safety labels affixed to the machine.Failure to do so may result in human injury or equipment damage.

3) Perform only the procedures explained in this manual. Refrain from opening or touching anyportions that are not related to your required operation(s).

4) Repair and replacement of parts should be performed by trained and qualified persons only.Operators should not attempt to do such repair or replacement work.

5) It must be appreciated that the above-mentioned cautions and warnings do not covereverything because it is impossible to evaluate all the circumstances of repair situations.

SPECIAL SAFETY INFORMATION

Cautions and warnings are made clear by following the Safety Alert Symbols or SignalWords such as DANGER, WARNING and CAUTION.

This is the safety alert. When you find this symbol placed on the equipment or marked inthis manual, be aware of the potential of human injuries. Follow the recommendedprecautions and safety operation practices.

DANGER is used to indicate the presence of a hazard which will cause severe human

injuries or a fatal accident if the warning is ignored.WARNING is used to indicate the presence of a hazard or unsafe practices which maycause severe human injuries or a fatal accident if the warning is ignored.

CAUTION is used to indicate the presence of a hazard or unsafe practices which maycause minor human injuries if the warning is ignored. CAUTION also calls your attention tosafety messages in this manual.

Carefully read all the safety messages set out in this manual and also in the safety warningsigns placed on the equipment. In this manual, the safety instructions (safety alert symbolsand signal words) are enclosed in a rectangular enclosure to bring them to your attention.Keep the safety signs on the equipment in good condition and ensure none are missing ordamaged. Replace the safety signs if unreadable or damaged. Learn how to operate the

equipment and how to use the controls properly. Do not let anyone operate this equipmentwithout following the instructions. Keep the equipment in proper working condition.Unauthorized modification to the equipment may impair the function & safety and affect thelife of the equipment.

Listed below are the various kinds of WARNING messages contained in this manual.

There is a danger of explosion if the battery is incorrectly replaced.

Do not replace the battery.

Do not disassemble, recharge or dispose of in fire.

Used battery should be disposed of according to local regulations.


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iv

WARNINGHAZARDOUS VOLTAGE

May cause serious injuries or fatal accidents. Voltage is now applied fromthe power supply of printer. There is a danger of electrical shock if youtouch the active area inside the printer.

Be sure to turn the power supply switch OFF and pull the plug out from thepower outlet before starting maintenance work on the printer.

WARNINGHARMFUL OZONE GAS

Inhalation of an excessive amount of ozone gas may adversely affect therespiratory organs.

An Ozone Filter is fitted to this printer to reduce the exhausted ozone. Thisfilter must be replaced with a new filter periodically in accordance with themanual supplied with the printer.

WARNINGHOT SURFACE

The Fusing Unit reaches a temperature of approx.170C and adjacentparts are also very hot.

When you need to change the cleaning pad or remove jammed paper, waitabout 20 minutes after opening the paper exit unit to allow the unit to cooldown.

CAUTIONROTATING PARTS

Be aware of the potential danger of various rollers and take care not to getyour fingers or hand caught into the machine, this can cause seriousinjuries. Note that the exit roller that ejects the printed paper is rotatingwhile printing.

Be careful not to get your hair, fingers, hands, sleeve or necktie caught inthe machine while operating the machine.


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v

CAUTIONHAZARDOUS POWDER

Toner is a fine powder which can cause a powder explosion if disposed ofinto a fire. Under no circumstances dispose of toner into a fire.

CAUTIONHAZARDOUS POWDER

Toner is a fine powder which may cause irritation to the eyes andrespiratory organs if inhaled.

Handle the toner cartridge, waste toner pack and developing unit carefullyso as not to spill the toner.

CAUTIONPOWER CORDS & PLUGS

This printer is equipped with a 3-wire power cord fitted with a 3-prongedplug (bi-polar plug with grounding) for the users safety.

Use these power cords in conjunction with a properly grounded electricaloutlet to avoid an electrical shock.

CAUTIONSAFETY INTERLOCK

The front cover, paper exit unit and transfer unit of this printer haveelectrical safety interlocks to turn the power off whenever they are opened.Do not attempt to circumvent these safety interlocks.


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vi

CAUTIONDo not lean against or apply any excessive force to the paper cassette,open cover of Duplex unit. Otherwise it may cause the product to decline

or fall down and result in the injuries.


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3

2

1

1. Hot Caution Label170 C/338 F

2. Laser Caution Label

5mW7 8 0 n m - 8 0 0 n m

DANGER- INVISIBLE LASER RADIATION WHEN OPEN.AVOID DIRECT EXPOSURE TO BEAM.

VORSICHT- UNSICHTBARE LASERSTRAHLUNG, WENN ABDECKUNGGEFFNET UND SICHERHEITSVERRIEGELUNG

BERBRCKT. NICHT DEM STRAHL AUSSETZEN.

DANGER- RAYON LASER INVISIBLE LORS DE LOUVER TURE.EVITER LEXPOSITION DIRECTE.

PELIGRO- RADIACION LASER INVISIBLE AL ABRIR. EVITARLA EXPOSICION DIRECTA AL HAZ.

MAS


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viii

3. Rating Label (For US)

(For Europe)

(Jam label)


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ix

SHIPMENT OF THE PRINTER

If for any reason you must ship the printer, carefully package the printer to avoid anydamage during transit. It is recommended that you save and use the original packaging.The printer should also be adequately insured with the carrier.

CAUTIONN When shipping the printer, remove the toner cartridges, the OPC belt

cartridge and the waste toner pack from the printer to prevent toner spillin the printer or damage of the toner cartridge and the OPC beltcartridge.

N When shipping the printer, remove the oil bottle and the fuser cleanerfrom the fusing unit. After removing the oil bottle, be sure to remove theoil remaining in the fusing unit with the supplied syringe. Failure to do so

will cause severe damage to the printer.


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I-1

CHAPTER I PRODUCT OUTLINE

1. FEATURES

This printer has the following features:

2400 x 600 dpi Class Resolution

The printer prints pages with a resolution of 600 dots per inch (dpi) asdefault. It also provides higher quality printout which is the equivalentof 2400 x 600 dpi resolution when using HRC or CAPT.

High Speed Color Laser Printing

The printer allows crisp printing in 24 bit brilliant color. The printerprints at a speed of 24 pages per minute in monochrome mode and 6pages per minute in full color mode. The controller utilizes a high

speed 32-bit RISC microprocessor and special hardware chips, whichprovides a very fast processing speed.

High Resolution Control (HRC)

The high resolution control (HRC) technology provides clear and crispprintouts and improves even the 600 dpi resolution. This mode iseffective when printing text data.

Color Advanced Photoscale Technology (CAPT)

The printer can print graphics in 256 shades for each color in HP

color printer PCL5C and BR-Script 3 emulations, producing nearlyphotographic quality. This mode is effective when printingphotographic images.

Maintenance-Free Toner Cartridge

A toner cartridge can print up to 12,000 (Black) and 7,200 (Cyan,Magenta and Yellow) single-sided pages at 5% coverage. The onepiece, easy-to-replace toner cartridges do not require difficultmaintenance.

Universal Media Cassette

This printer loads paper automatically from the media cassette. Sincethe media cassette is a universal type, a number of different sizes ofpaper can be used. Even envelopes can be loaded from the mediacassette.


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I-2

Three Interfaces

This printer has a high speed, bi-directional parallel interface, USBand Ethernet 10/100BaseTX.

If your application software supports the bi-directional parallelinterface, you can monitor the printer status. It is fully compatible withthe industry-standard bi-directional parallel interface.

The Brother network board (NC-4100h) is factory installed in the HL-2600CN, which enables you to use this printer in the TCP/IP,IPS/SPX, Apple Talk, DLC/LLC, Banyan VINES, DEC LAT andNetBEUI environments. Also, many useful utilities, such as BRAdminProfessional for the administrator and Brother network printingsoftware, are included in the CD-ROM supplied with the HL-2600CN

printer. For setup, see the Network Users Guide.Automatic Interface Selection

The printer can automatically select the bi-directional parallel, USB,NETWORK depending on the interface port through which it receivesdata. With this feature, the printer can be connected to more than onecomputer.

Five Emulation Modes

The printer can emulate Hewlett-Packard Color PCL

5C (PCL6

inmonochrome mode) and PostScript

3 language emulation (Brother

BR-Script 3) printers, the industry-standard HP-GL plotter as wellas EPSON

FX-850, and IBM

Proprinter XL

printers (in

monochrome mode). It is possible to print with all applicationprograms that support one of these printers.

Automatic Emulation Selection

The printer can automatically select the printer emulation modedepending on the print commands it receives from the computersoftware. With this feature, many users can share the printer on anetwork.

Data Compression Technology

The printer can internally compress the received graphics and fontdata in its memory so that it can print larger graphics and more fontswithout additional memory.


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Various Fonts

The printer has 66 scalable and 12 bitmapped fonts. The fonts thatcan be used will vary according to the selected emulation mode.

In PCL mode, you can also print the 13 kinds of bar codes listedbelow. In BR-Script mode, the printer has 165 scalable fonts.

< Bar Code Printing >

This printer can print the following 13 types of bar codes:

Code 39 UPC-E

Interleaved 2 of 5 Codabar

EAN-8 FIM (US-PostNet)

EAN-13 Post Net (US-PostNet)

EAN-128 ISBN (EAN)

Code 128 ISBN (UPC-E)UPC-A

CCITT G3/G4

Since the printer supports the CCITT G3/G4 format in addition to HP-compatible formats, it can quickly receive and print data compressedin this format.

Lock Panel

If the panel button settings have been changed, the printer may notwork as expected. It is possible for the administrator of the printer tolock the settings to prevent changes from being made.

Power Save ModeThe printer has a power saving mode. As laser printers consumepower to keep the fixing assembly at a high temperature, this featurecan save electricity when the printer is on but not being used. Thefactory setting of the Power Save mode is ON so that it complies withthe EPA Energy Star new specification. Compared with conventionallaser printers, this printer consumes less power even when the powersaving mode is turned off.

Toner Save Mode

The printer has an economical toner save mode. This mode allowsyou to reduce the printer running cost substantially in addition to theimproved life expectancy of the toner cartridge.

Reprint Function

A touch of a panel button allows reprinting of the last print job withoutsending the data again from the computer. When there is not enoughmemory to print the last complete job out, the last print page can bereprinted.

Saving User Settings

It is possible to operate the printer differently from other users with thepanel button settings. One set of user settings can be stored.


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2. PARTS NAMES & FUNCTIONS

Fig.1-1

Fig.1-2

10. Paper stopper A

8. Controller Box

6. Power Inlet

7. Rear Access Cover

1. Top Cover ASSY 2

2. Control Panel

5. Power Button

Media Cassette3. Front Cover 2

11. Paper stopper B

9. Paper Exit Unit Cover 2

4. Paper Exit Unit


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I-5

No. Part Name Outline of Functions

1 Top Cover ASSY 2 To act as an upper enclosure and also as a

paper tray for printed paper.

2 Control Panel To display the status of printer operation.

3 Front Cover 2 To act as a front enclosure, opened whenreplacing a toner cartridge or waste toner pack.

4 Paper Exit Unit To exit a printed paper onto a top cover ASSY 2,acting also as paper tray for printed paper.

To be opened when replacing an OPC beltcartridge.

5 Power Button To operate power-on and off to the printer.

(Push for On/Off operation)

6 Power Inlet To connect a power supply cable.

7 Rear Access Cover To act as a rear enclosure, opened whenclearing an internal jam or doing maintenancework.

8 Controller Box Space for a controller PCB to be installed.

9 Paper Exit Unit Cover 2 Cover to be provided at duplex transportationinlet and to be removed when installing theduplex transportation unit.

10 Paper Stopper A Stopper to be erected for alignment of exitedpapers and also prevention of falling down.

11 Paper Stopper B Stopper to be erected for preventing exitedpapers from falling down.


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I-6

3. INTERNAL STRUCTURE

K

Y

M

C

Fig.1-3

No. Components Name Outline of Functions

1 Toner CartridgeContain the toner (K, Y, M, C) for developing.Each toner cartridge (K, Y, M, C) is independent.

2 OPC Belt Cartridge Forms images and includes the photoconductive belt.

3 Drum Cleaner 2Cleans and collects waste toner adhering to the transferdrum 2.

4 Fusing Unit Fixes by heat and pressure the toner image onto the paper.

5 Transfer unit 2 Transfers toner images from the transfer drum 2 to thepaper.

6 Transfer Drum 2Forms color images, combining the toner images from the

OPC belt on the drum.

7 Paper DischargerEmits a corona charge for separating the paper from thetransfer drum 2.

8 Transfer Roller 2 Transfer the toner image on the transfer drum 2 to thepaper.

9 Media Cassette Feeds paper automatically.

10 Paper Pick-up Roller Feeds paper automatically from the paper cassette.

11 Scanner Unit Generates a laser beam and scans the OPC belt.

12 Registration Roller 2 Aligns the paper correctly ready for printing

4.Fusing Unit

3.Drum Cleaner 22.OPC Belt Cartridge

8.Transfer Roller 2

9.Media Cassette

11.Scanner Unit

1.Toner Cartridge (K, Y, M, C)

10.Paper Pick-up Roller

12.Registration Roller 2

6.Transfer Drum 2

7.Paper Discharger

5.Transfer Unit 2


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4. DESCRIPTION OF CONTROL PANEL

The printer control panel provides control of the printer including test printing,maintenance operations performed by the video controller and also the ones which are

performed by the engine controller.

The Video Controller Mode and the Engine Controller Mode have some commonfunctions. Under normal circumstances the functions in the Video controller mode will beused. Refer to Chapter V for further information.

4.1 Video Controller Mode

The printer goes into the Video Controller Mode when the power is turned on by pressingthe power button.

The Video Controller Mode supplies the general test printing and setting functions andsome of the maintenance operations. If further engine settings are required, use theEngine Controller Mode.

4.2 Engine Controller Mode

The printer goes into the Engine Controller Mode when power is turned on by pressingthe power button at the same time as holding down the secure print, back, set. (Refer toFig.1-4.)

Note:

This mode provides unique control panel display and operation functions which arecompletely different from the ones described on the actual control panel or in the usersguide. Refer to Chapter V for detailed information.


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I-8

Back

Go JobCancel

Alarm

Power Data Ready

Menu

Reprint

SecurePrint

Set

K C M Y

1

9

4

10

13

12

6

5

2

3

11

7

8

Fig.1-4

No. LED / Button Name

1 LCD: 16 character by 2 lines

2 Power LED

3 Ready LED

4 Data LED

5 Go button

6 Job Cancel button

7 Alarm LED

8 Secure Print button

9 - button

10 + button

11 Reprint button

12 Back button

13 Set button


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CHAPTER II

SPECIFICATIONS


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2.5.1 Printable Media & Cassette Capacity ............................................................................II-5

2.5.2 Printed Output................................................................................................................II-6

2.5.3 Recommended Paper Specifications.............................................................................II-6

2.5.4 Effective Printing Area ...................................................................................................II-6

2.5.5 Paper Feed Jam Rate....................................................................................................II-8

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II-1

CHAPTER II SPECIFICATIONS

1. RATING

WARNING

Use the power supply cable supplied with the printer, or a similar cable complying withthe following specification (3-wire power cable with ground).

Use of an out of specification cable may result in an electric shock.

Destination Voltage (V) Frequency (Hz) Input Current (A) Power Cord (Piece)

US / Canada 120 50/60 11 1

Europe 220 - 240 50/60 6 1 *

* For the model for Europe, the power supply cable depends on the country asfollows;

Figure Rating Approval Agency Applicable Area

A250VAC, 6A

VDE, DEMKO, SEV Europe (Continent)

B BS UK

Figure A: For Europe (Sample)

2.5m

Figure B: For UK

2.5m

Note:

For details of other power supply cables, refer to the parts reference list.

** For rating labels, refer to the Safety Instruction on Page vi.


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II-2

2. GENERAL SPECIFICATIONS

2.1. Printing

Print method: Electrophotography by semiconductor laser beam scanning

Resolution: 600 x 600 dots per inch (Fine)The resolution can be enhanced to 2400 dpi class by using theHRC(High Resolution Control) and CAPT (Color Advanced PhotoscaleTechnology) features.

Print speed: Monochrome mode: 24 page/minute (A4/Letter-size)Full color mode: 6 page/minute (A4/Letter-size)

Warm-up: Max. 4 minute at 20C (68F)

First print: Monochrome mode: 15 seconds or lessFull color mode: 22.5 seconds or less

(when loading A4/Letter-size paper by face down print delivery fromstandard upper cassette feed)

Print media: Toner in a single-color single-component cartridgeLife Expectancy: 12,000 single-sided pages/cartridge (Black)

7,200 single-sided pages/cartridge (Cyan,Magenta, Yellow)

Note: These figures are based on an average of 5% coverage of the printable area forone color using laser paper. The frequency of replacement will vary, dependingon the complexity of the prints, the percentage of coverage, and the type ofmedia. Transparencies, glossy coated paper and other special media will result inshortened consumable life.

Resident Printer Fonts :66 scalable fonts and 12 bitmapped fonts,11 bar codes165 scalable fonts


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II-3

2.2. Functions

CPU: Toshiba TMPR 4955AF-266 (TX4955 266MHz)

Emulation: Automatic emulation selectionHP Color Printer (PCL5C) including HP LaserJet 4+ (PCL5e) and HP

LaserJet 5 (PCL6 monochrome)BR-Script 3 (Adobe PostScript 3 compatible)HP-GLEPSON FX-850IBM Proprinter XL

Interface: Bi-directional parallel

Universal Serial Bus (USB)

Ethernet 10/100 Base-TX

RAM: Standard model: 64Mbytes(Expandable up to 384Mbytes with DIMMs)

The standard memory fitted can vary depending on the printer model andcountry

Control panel: 8 buttons, 4 LEDs and a 16-column x 2 lines liquid crystal display

Diagnostics: Self-diagnostic program

2.3. Electrical and Mechanical

Power source: U.S.A. and Canada: AC 120V, 50/60HzEurope and Australia: AC 220 to 240V, 50/60Hz

Power consumption:Printing: 600W or lessStanding by: 260W or lessSleep: 30W or less

Noise: Printing: 55dB A or lessStanding by: 48dB A or less

Temperature: Operating: 10 to 32.5C (50 to 90.5F)Non Operating: 5 to 35C (41 to 95F)Storage: 0 to 35C (38 to 95F)

Humidity: Operating: 20 to 80% (non condensation)Storage: 20 to 80% (non condensation)

Dimensions (W x D x H):

500 x 520 x 410 mm (19.7 x 20.5 x 16.1 inches)500 x 520 x 555 mm (19.7 x 20.5 x 21.9 inches)with the optional lower tray unit fitted

Weight: Approx. 39kg (86lbs.)Approx. 54.4kgwith the optional lower tray unit and toner cartridges fitted


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II-4

2.4. Network

Type / Speed: Ethernet 10/100BaseTX Printer server (NC-4100h)Auto speed detection

Protocols: TCP/IP (DHCP, BOOTP, RARP, DHCP, NetBIOS over IP

LPR/LPD, Port9100, Custom Port, POP3/SMTP SMB PrintTELNET, SNMP, HTTP, TFTP), EtherTalk, IPX/SPX, DEC LAT,

Banyan VINES, NetBEUI, DLC/LLC

Management: Web Based Management

BRAdmin Professional Windows based management utility

Firmware update: 8MB flash ROM. Use BRAdmin Professional when upgrading printserver software or BOOTP, TFTP PUT/GET or IPX for Netware.

Supplied software: BRAdmin Professional (for Windows 95/98/ME/NT 4.0/2000/XP)Driver Deployment Wizard (for Windows 95/98/ME/

NT 4.0/2000/XP)

Network Print Software (for Windows 95/98/ME/NT 4.0/2000/XP)

Storage Manager (for Windows 95/98/ME/NT 4.0/2000/XP)

Analysis Tool (for Windows 95/98/ME/NT 4.0/2000/XP)


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II-5

2.5. Paper Specification

2.5.1 Printable Media & Cassette CapacityThe standard media cassette (upper cassette) is supplied with the printer. The optionallower tray unit and the optional Legal cassette can also be installed.

1) Printable Media: Plain paper / Transparency / Thick Stock / Label / Envelope

2) Printable size: (Refer to the list below.)

3) Feedable paper weight: 64 (18lb.) to 163 (43lb.) g/m2

4) Maximum load height : 27mm

Plain paper: 250 sheets of 75g/m2 (20lb) paper

Envelopes : 15 sheets

Transparency: 50 sheets

Label: 80 sheets

5) Setting method: Pull the media cassette out of the printer toward you, insert

the paper into the cassette after aligning the top edge of thesheets, then push the cassette back into its original position.

Paper Source Printable Media Size

Plain paper: A4, Letter, B5, Executive

The Standard Media Cassette Envelope: COM10, DL

Other size: width 105-216mm (4.1-8.5)length 220-297mm (8.7-11.7)

Plain paper: Legal, A4, Letter, B5, Executive

The Optional Legal Cassette Envelope: COM10, DL

Other size: width 105-216mm (4.1-8.5)length 220-355.6mm (8.7-14)

105 to 216 mm

220 to 297mm(Standard Cassette)

220 to 355.6 mm

(Legal Cassette)Feeding direction

(face up)


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II-6

2.5.2 Printed Output

250 sheets of 75g/m2 (20lb) paper / plain paper can be stacked in the output tray.

Face-down print delivery

Note: Face down: Delivers the printed side of the paper downwards

Environment: 17.5 27.0C, 50 70%RH

2.5.3 Recommended Paper Specifications

Item Description

Basis Weight (g/m2) 82 5

Thickness ( m) 95 6

Smoothness (Bekk) (seconds) 90 20

Stiffness (Clark) 100 15

Brightness (%) 85 2

Surface Resistance ( ) 1010

~ 1011

Grain Direction Long

Measurement Condition: 17.5 ~ 27.0C, 50 ~ 70%RH

Note: Keep the paper sealed in the bag as supplied and do not open the paper baguntil the paper is required for use.

2.5.4 Effective Printing Area

(1) Printable area

A

E C E

B D

F

F

The effective printing area means the area within which the printing of all the data

received without any omissions can be guaranteed. (Refer to Table 2-1 for details.)


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II-7

Table 2-1: Effective Printing Areas

Size A B C D E F

A 4

210.0mm

8.27

(2,480 dots)

297.0mm

11.69

(3,507 dots)

203.2mm

8.0

(2,400 dots)

288.5mm

11.36

(3,407 dots)

3.4mm

0.13

(40 dots)

4.23mm

0.17

(50 dots)

Letter

215.9mm

8.5

(2,550 dots)

279.4mm

11.0

(3,300 dots)

207.44mm

8.16

(2,450 dots)

271.0mm

10.67

(3,200 dots)

4.23mm

0.17

(50 dots)

Legal

215.9mm

8.5

(2,550 dots)

355.6mm

14.0

(4,200 dots)

207.44mm

8.16

(2,450 dots)

347.1mm

13.67

(4,100 dots)

B 5 (JIS)

182.0mm

7.16

(2,149 dots)

257.0mm

10.12

(3,035 dots)

173.54mm

6.82

(2,049 dots)

248.5mm

9.78

(2,935 dots)

B 5 (ISO)

176.0mm

6.93

(2,078 dots)

250.0mm

9.84

(2,952 dots)

167.54mm

6.59

(1,978 dots)

241.5mm

9.5

(2,852 dots)

Executive

184.2mm

7.25

(2,175 dots)

266.7mm

10.5

(3,150 dots)

175.74mm

6.91

(2,075 dots)

258.3mm

10.17

(3,050 dots)

COM-10

104.8mm

4.125

(1,237 dots)

241.3mm

9.5

(2,850 dots)

96.34mm

3.785

(1,137 dots)

232.8mm

9.16

(2,750 dots)

D L

110.1mm

4.33

(1,299 dots)

221mm

8.66

(2,598 dots)

101.64mm

3.99

(1,199 dots)

211.5mm

8.33

(2,498 dots)

(Note that the paper sizes indicated here should conform to the nominal dimensionsspecified by JIS.)

A4 paper must accommodate 80 characters printed in pica pitch (203.2 mm).

The dot size is based on 300 dpi resolution.


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II-8

(2) Print guarantee area

4mm

Non printable area

Non guarantee area

4mm

Printguaranteearea

3mm

5mm

3mm

5mm

Paper:5mmOther:10mm

Paper:4mmOther:10mm

3mm

4mm 4mm

COM10:68mm

DL:40mm

COM10:68mm

DL:40mm

42mm

16mm

Non printable area

Non guarantee area

Print guarantee area

2.5.5 Paper Feed Jam RateLess than 1 misfeed per 2000 pages under normal environmental conditions.

Less than 1 misfeed per 1000 pages outside the normal environmental conditions.

Note:

These figures are based on the paper whose specification is recommended. For therecommended specifications, refer to Section 2.4.3 of this chapter.


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II-9

3. ENVIRONMENTAL CONDITION

3.1 Ambient Temperature / Humidity / Altitude

(1) Under Operational conditions: 10.0 32.5 C, 20 80%RH (See the figure below.)

100 17.5 20 27 30 32.5 40

Recommended Condition;

17.5 2750 70%RH

20

60

70

80

40

Ambient

Humidity(%RH)

Ambient Temperature ( )C

C50

Zone A

Zone B

Operation Areaother than Zone A.

(2) Under Non Operational conditions: 5.0 35.0 C, 10 80%RH (See the figurebelow.)

100 20 30 35 40

20

60

80

40

AmbientHumidity(%RH

)

Ambient Temperature( )

5

30

10

C


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II-10

(3) Storage and Transportation Environment of Printer

The following defines the storage and transportation environment of printers that havebeen packed according to Brother specification. However, this section does not cover theOPC belt cartridge and toner cartridges.

NormalConditions

0 C 35 C (32 F 95 F)

Temperature SevereConditions

High Temperature: 35 C 40 C (95 F 104 F)

Low Temperature: -10 C 0 C (14 F 32 F)

Humidity 10% 90%RH

Period of Storage One Year after EX-works

Other No Condensation

Atmosphere 613 1,067hpa (460 880mmHg)

The period under the severe conditions should not be continuous, and is assumed as anaccumulation of intermittent time. However, an individual period of intermittent time undersevere conditions should not be allowed to exceed 48 hours.

Note:

Normal conditions should occupy more than 90% of total storage period.

Severe conditions should be less than 10% of total storage period.


38/384

&+$37(5,,,

,167$//$7,21


39/384

&217(176

&+$37(5,,,,167$//$7,21,,,

&21',7,2165(48,5(')25,167$//$7,21 ,,,

813$&.,1* ,,,

,167$//$7,21:25. ,,,


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III-1

CHAPTER III INSTALLATION

1. CONDITIONS REQUIRED FOR INSTALLATION

Any Laser beam printer is likely to be influenced by the environment of the set-uplocation. If the printer is set-up in an inappropriate location, the printer may not perform asexpected. Therefore, the following factors should be taken into consideration beforedeciding where to set-up the printer.

1.1. Environmental Conditions

The printer should not be set up in the locations referred to in the following items (a)through (d) which specify inappropriate locations for set-up.

(a) Where it is likely to receive direct sunlight or similar light. (For example, next to awindow)

(b) Where it is likely to suffer a big difference in temperature and humidity between themaximum and minimum levels. (Normal operation environment is within 10 C 35 C,

20 80%RH and without any condensation.)

(c) Where it is likely to be in a draft of cold air from an air-conditioner or warm air from aheater, or to receive direct radiant heat.

(d) Where it is likely to be excessively dusty or be subject to corrosive gases such asammonia.

(e) Users should select a location with good ventilation and set the printer on a flatsurface.

(f) Users should check that the maximum angle of the set-up location is horizontal towithin 1 .

1.2. Basic Layout of Printer Set-up Location

Fig.3-1 shows the basic layout of the printer set-up location that is suitable for smoothoperation and maintenance of the printer.

PaperExitSide

FrontSide

20cm (8")

70cm

(28")

50cm (20")

50cm (20")54cm (21.3")

50cm

(19.7")

Table

Power Cord

Fig.3-1

The space in front of the printer (70cm) is necessary to open the front cover.

The space at back of the printer (20cm) is necessary to open / close the rear accesscover.

The space on both sides of the printer (50cm) is necessary for general access.


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III-2

2. UNPACKING

WARNING

The package containing a printer weighs approximately 45kg, so it is too heavy forone person to carry. It needs two adults to move the printer. Since the printer is aprecision machine, make sure that it is carried slowly with care so that no impactoccurs to the printer while moving it.

Do not attempt to lift a printer when it is covered by the vinyl bag because it is slipperyand may result in damage and injury if dropped.

2.1 Unpacking the Printer

Refer to Fig.3-2 on the next page.

1) Cut the P.P band (2 pieces).

2) Remove the plastic joints (4 locations).

3) Remove the outer box tape.

4) Open the top of the package and take the starter kit out.

5) Lift the outer box up from around the printer.

6) Remove the upper packing (4 locations).

7) Take out the power code.

8) Open up the polyethylene bag enclosing the printer.

9) Lift up the printer with another persons help, and move it away from the polyethylenebag.

10) Remove the shipping tape (4 locations).

11) Remove the fixing tape of the silica gel the printer rear side.

12) Remove the silica gel.


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III-3

Toner Partition Packing

Polye

Polyethylene

Bag (T)

Polyethylene

Bag (T)

#23 Polyethy

P.P Band (w

Silica Gel (EN)

Silica Gel (ST)

F23 Polyethylene

Bag (Oil)

Starter Kit

Packing (L)

Base

Packing

F Tape (w:38mm)

Polyethylene

Bag (EN)

F Tape (w:38mm)

Engine Top Cushion

Polyethylene

Bag (ST)

Outer BoxSilica Gel

(ST)

Starter Kit Packing (U)

Scotch Tape (w:25mm)

#7 Polyethylene

Bag

Engine Top Cushion

Sleeve

F Tape (w:38mm)Fig.3-2


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III-4

2.2 Unpack the Starter Kit

1) Open the polyethylene bag and slide off the cardboard sleeve covering the starter

kit.

2) Confirm all of the following parts are inside the starter kit packing box.

No. Kit Name Appearance Quantity

1 Toner Cartridge (Y,M,C,K) 4

2 OPC Belt Cartridge 1

3 Oil Bottle 1

4 Fuser Cleaner 1

CAUTION

When shipping the printer, remove the oil bottle and the fuser cleaner from the fusingunit. After removing the oil bottle, be sure to remove the oil remaining in the fusing unitwith the supplied syringe. Failure to do so will cause severe damage to the printer.

Y(Yellow)

M(Magenta)

C(Cyan)

K(Black)

Fuser Cleaner

Spuit


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III-5

3. INSTALLATION WORK

Install the unit parts of the starter kit into the printer according to the followingprocedures:

3.1 Install the Fuser Cleaner and Oil Bottle

1) Open the paper exit cover.

Pressure has been released by thefusing release lever between the fuserroller and back-up roller while thetransportation and storage.

Release the fusing release lever.

CAUTIONDo attempt to loosen the oil bottlescap, because loose cap is likely tocause the oil leakage.

2) Open the retainer lock lever of oil bottleand the fuser cleaner.

3) Install the oil bottle to the fusing unit.

Fig.3-4

4) Install the fuser cleaner to the fusingunit.

5) Hold the fuser cleaner with the retainerlock lever.

6) Close the paper exit cover.

Fig.3-5

Fusing

release lever

Paper exit cover

Fusing oil bottle

Fuser cleaner

Lock lever


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III-6

3.2 Install the OPC Belt Cartridge

&$87,21

Do not directly touch the OPC belt surface with barehands or gloves.

If the OPC belt is exposed for more than two minutesunder the light of 800 lux, the belt may be damaged.

1) Open the front cover and the paper exitunit cover 2 by releasing the latches.

CAUTION

When installing or removing the OPCbelt, be sure to open the front coverfirst. Failure to do so will cause theOPC belt to be damaged due tocontact with the toner cartridges.

Fig.3-6

2) Release the belt cartridge lock levers(left & right).

Fig.3-7

Front cover

Belt cartridge lock lever

Paper exit unit

cover 2


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III-7

3) Pull and remove the tension releasepins on both sides (left & right) of theOPC belt cartridge.

4) Remove the protective sheet from thenew OPC belt cartridge.

Fig.3-8

5) Install the new OPC belt cartridge intothe printer, along the guide of beltcartridge lock lever provided at bothsides.

Fig.3-9

6) Set the belt cartridge lock lever at bothsides (left and right).

7) Close the paper exit unit cover 2.

Fig.3-10

Tension

release pin

OPC belt cartridge

Protective sheet

Tension

release pin

Belt cartridge lock lever

OPC belt cartridge


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III-8

3.3 Install the Toner Cartridges into the Printer

&$87,21

Refrain from holding a toner cartridge vertically, otherwise, it may adversely affect theprint quality.

Do not hold the toner cartridge vertically(neither long nor short edge), otherwise , itadversely affect the print quality.

1) Open the front cover.

2) Holding a toner cartridge horizontally,shake it to left and right for three to fourtimes.

Fig.3-11

3) Remove the seal tape and remove aprotective cover of toner cartridge.

Fig.3-12

4) Push the new toner cartridge along theguide into the printer.

Fig.3-13

5) Installation order of toner cartridge interms of color shall be Cyan (C),Magenta (M), Yellow (Y), and Black (K).

6) Close the front cover.

Fig.3-14

Toner cartridge

Protective cover

Toner

cartridge

C

M

Y

K


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III-9

3.4 Test Print

1) Make sure the printer power button is off. Do not connect the interface cable.

Fig.3-15

2) Connect the AC power cord to the printer, and then plug it into the AC outlet.

Fig.3-16

3) Turn on the power button.

Fig.3-17


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III-10

4) After the printer warms, the READY message will appear.

K C M Y

HL-2600CNNETWORK READY

DataReadyPower

Alarm

Reprint Back Set

SecurePrint

GoJob

Cancel

Fig.3-18

5) Press the Go button. The printer will print a test page. Check that the test page isprinted correctly.

K C M Y

HL-2600CNNETWORK READY

DataReadyPower

Alarm

Back Set

GoJob

Cancel

Fig.3-19

Unfold the tray extension flapControl panel


50/384

CHAPTER IV

STRUCTURE OFSYSTEM COMPONENTS


51/384

%%$

CHAPTER IV STRUCTURE OF SYSTEM COMPONENTS ...........IV-11. BASIC STRUCTURE.................................................................................. IV-1

1.1 Print System and Transfer System................................................................................. IV-6

1.1.1 Structure of the Printer ............................................................................................. IV-7

1.1.2 Basic Structure of the Printing System..................................................................... IV-8

1.1.3 Details of Each Process ......................................................................................... IV-10

1.2 Scanning System.......................................................................................................... IV-21

1.3 Paper Transportation System....................................................................................... IV-23

1.4 Fusing Unit.................................................................................................................... IV-25

2. STRUCTURE OF THE CONTROL SYSTEM .......................................... IV-272.1 Basic Structure ............................................................................................................. IV-27

2.1.1 Electrical System and Functions............................................................................ IV-272.2 Control System ............................................................................................................. IV-34

2.2.1 Control of the Print Process ................................................................................... IV-34

2.3 Main PCB (Video Controller PCB) ................................................................................ IV-42

2.3.1 Outline.................................................................................................................... IV-42

2.3.2 Circuit ..................................................................................................................... IV-44

2.4 Power Supply Unit ........................................................................................................ IV-56

2.5 High Voltage Power Supply Unit................................................................................... IV-60

2.6 Wiring Diagram ............................................................................................................. IV-63


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IV-1

CHAPTER IV STRUCTURE OF SYSTEM COMPONENTS

1. BASIC STRUCTURE

This laser beam color printer (hereinafter called Printer) consists of five mechanicalsystems; Print, Transfer, Scanning, Paper Transport and Control System. The printerproduces color printing through the interactive operations of these five systems as shownin Fig.4-1.

(1) Print System

The print system consists of the following 6 (six) functional parts located aroundthe OPC belt which form a toner image on the OPC Belt.

Charger Part

Exposure Part

Development Part

First Transfer PartDischarger Part

Cleaner Part

(2) Scanning System

The scanning system consists of the following 2 (two) functional parts which forman electrostatic latent image on the OPC Belt by scanning it with a laser beam.

Scanner Unit

Scanner Motor (SCM)

(3) Transfer System

The transfer system consists of the following 3 (three) functional parts andtransfers the toner image formed on the transfer drum onto the page.

Transfer Drum

Second Transfer Part

Drum Cleaner Unit

(4) Paper Transport System

The paper transport system consists of the following 5 (five) functional parts andpicks up paper from the media cassette, separates the paper from the transferdrum and exits it from the printer body after fusing the toner image on the paper.

Media CassetteTransport rollers

Paper Discharger

Fusing unit

Paper Exit


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IV-2

Paper Exit Unit

Fusing Unit

Transfer Unit

AC Discharger Unit

Transfer Roller

Paper Exit

Fix

Paper Discharger

Drum Cleaner Unit

Erase Lamp

Discharge

Charge

Exposure

Development

Paper Feed

Media Cassette

DC Charge

Second Transfer

Drum Cleaning

Operation

First Transfer

Paper Pick-up Roller

Cleaning

K

Y

M

C

Fig.4-1

Transfer Drum

OPC Belt

Registrater Roller

MM

Main Motor

De


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IV-3

(5) Control System

The control system consists of the following 4 (four) control parts and runs theprinter by processing the interface signals transmitted from the Host computer andinterfacing to the print, transfer, scanning and transport systems.

Sequence Control

Laser ControlFusing Temperature Control

Interface Control

(1) Principle of Color Printing

Color printing is made through the subtractive process by combining the threeprimary colors, yellow, magenta, and cyan. Fig.4-2 shows the three primary colorsand subtractive process:

C

BL

BK

GR

M R Y

Y: Yellow

M: Magenta

C: Cyan

R: RedGR: Green

BL: Blue

BK: Black

Fig.4-2

(2) Basic Color Printing Process

(a) The printer has a Toner Cartridge of each color yellow, magenta, cyan and blackas shown in Fig.4-3.

(b) The toner image developed using the primary colors is transferred to the transferdrum for the printed color combination as shown in Fig.4-4 a .

(c) The toner image formed on the transfer drum is transferred to the transportedpaper as shown in Fig.4-4 b .

(d) The toner on the paper is fused by the thermal fixing unit to fix the toner imageonto the paper as shown in Fig.4-4 c .

Summarizing the above processes, a toner color layer is formed on thetransported paper, and subsequently, the color image is made through thesubtractive process.


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IV-4

K

Y

M

C

Fig.4-3

Y Y YM M M

C C Y Y YC C C

Transfer Drum

b M M MY Y Y

C C C C CY Y Y

Paper

C

Paper

Red GreenCyan

Toner

R C GR

a . First Transfer

b . Second Transfer

C . Fusing

a

Fig.4-4

OPC Belt Cartridge

Toner Cartridge

Transfer Drum


56/384

IV-5

The OPC belt consists of a surface layer having a photoconductor (OPC) of organicmaterial, the inner layer of an insulator material (PET / Mylar) and an aluminum depositlayer in between. The OPC belt is located as shown in Fig.4-5 as the main part of theprint system.

K

Y

M

C

Fig.4-5

Fig.4-6

OPC Belt Cartridge Toner Cartridge

OPC Belt

Transfer Drum

Scanner Unit

Electrode Photoconductor(OPC)

Aluminum deposit layer

Insulator Material


57/384

IV-6

1.1 Print System and Transfer System

Fig.4-7 shows the basic structure of the print system having the OPC belt as the mainpart and the transfer system having the transfer drum as the main part. Color printing isachieved by actuating in sequence each process in the print system and transfer system.

4 cycles of actions 1 to 6 are required to form a full 24 bit color image on the transferdrum, only one cycle of actions 7, 8 and 9 is required to transfer the image to the paperfrom the transfer drum ready for fixing by actions 10 and 11.

1

2

4 Transfer Drum(First Transfer)

OPC Belt

3

Transfer Drum

5

6

7

8

9

10

11

Print System

Transfer System

K Y M C

K Y M C

K Y M C

K Y M C

Transport System

Exposing

Charging

OPC Belt Cleaning

Belt DischargeDeveloping

Transfer Drum Cleaning

Paper Dischanging

Fusing

Paper Exit

Second Transfer(Paper)

Fig.4-7


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IV-7

1.1.1 Structure of the Printer

No. Component Part Process

1 Charger Charging

2 Scanner Unit Exposing

3 Toner Cartridge Developing

4 OPC Belt Cartridge Receives the Image

5 Transfer Drum Transfers the Image

6 Belt Discharger Erase Lamp Discharges the Belt

7 Cleaning Blade Cleaning the Belt

8 Transfer Roller Transferring

9 Paper Discharger Discharges the Paper

10 Drum Cleaner Cleans the Drum

11 Fusing Unit Fusing

12 Paper Exit Unit Exits the Paper

13 Registration Roller Paper Alignment

K

Y

M

C

Fig.4-8

11. Fusing Unit10. Drum Cleaner 4. OPC Belt Cartridge

3. Toner Cartridge

(K,Y,M,C)

Media Cassette1. Charger7. Cleaning Blade6. Erase Lamp

Paper Pick-up

Roller

5. Transfer Drum

8. Transfer Roller

9. Paper Discharger

Transfer Unit

12. Paper ExitUnit

13. Registration Roller

2. Scanner Unit


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IV-8

1.1.2 Basic Structure of the Printing System

A toner image is formed through the potential of the OPC belt varying in each of thecharger, exposure, development, transfer and cleaning processes.

(1) Process of Print System (See Fig.4-9.)

i) The OPC belt is biased to the voltage -CBV(V) by the power supply CBV.ii) A negative high voltage is applied to the charger unit by the power supply CHV,

and a corona is generated as the result.

iii) The developer magnetic roller of the toner cartridges is biased to -DBV(V) bythe power supply DBV.

iv) The frame potential of the transfer drum is GND.

Paper Discharger

ACHV

Transfer Roller

THV (+)

THV ( - )

Fuser Unit

Transfer Drum

Paper

CleaningBurush

FCBV

OPC Belt

Erase Lamp

CleaningBlade

CHV

ZDV

Charger Po

Scannerl UnitCBV

Y

Develop

M

C

K

Toner Cartridge

Toner

DBV

Cleaning Unit

Fig.4-9

No. Function Power Supply (P/S)P/S Name Approx.Output Voltage

1 Charging CHV(-) 4.6KV

HVRD6190 619V

2 First Transfer CBV(-) 200V 900V

3 Developing Y,M DBV(-A) 200V 400V

Bias C,K DBV(-B) 200V 400V

4 Second Transfer THV(+) 400V 3,000V

5 Transfer Roller Cleaning THV(-) 600V

6 Paper Discharging ACV( ) 4.9KV

DCV(+) 200V7 Drum Cleaning FCBV 200V 1,500V


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IV-9

(2) Variation of OPC Belt Potential (See Fig.4-10.)

i) The OPC belt is initially biased to -CBV(V).

ii) The OPC belt surface is evenly charged to V0(V) in the charging process.

iii) The potential of the exposure part of the OPC belt is reduced to -VR(V) as it isexposed to the laser beam in the process of exposing, and an electrostatic

latent image is formed on the OPC belt as the result.iv) Negatively charged toner is moved onto the exposed part of the OPC belt in the

development process due to the difference of potential between -VR(V) (thelatent image) and -DBV(V), and a visible toner image is formed as the result.

v) Negatively charged toner on the OPC belt moves to the transfer drum surfacein the transfer process because the GND potential of the transfer drum isgreater than -VR(V) of the OPC belt.

vi) The OPC belt is discharged by the erase lamp.

2 3 4 5

OV

Transfer Drum

Toner- CBV

OPC Belt

CBV

- VO

- VR

DBV

Charger

CHV DBV

Dev. roller

Charging Process

Exposing Process

Developing Process

Transfering Process

Cleaning (Erase)

Power Supply for OPC Belt Bias

Power Supply for Charging

Power Supply for Mag Roller Bias

Remain voltage on the OPC Belt

Process

GND

Toner

1

12

3

4

5

CBV

CHV

DBV

- VR

Fig.4-10


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1.1.3 Details of Each Process

1 Charging

The charging process ensures that the OPC belt is evenly charged by the charger

system.

(1) Structure of the Charger Unit (Refer to Fig.4-8 and Fig.4-11)

i) The charger unit is located as shown in Fig.4-8.

ii) The charger unit consists of the case, corona wire and grid.

iii) The charger unit charges the OPC belt surface to the potential -V0(V) with the

corona charge.

iv) The charger unit has the grid controlled to the constant voltage ZD(V) for evencharging.

(2) Process of Charging (Refer to Fig.4-12.)

i) The status of the OPC belt surface before charging is -CBV(V).ii) The charger unit charges the OPC belt surface evenly to -V

0(V) by generating a

negative charge.

ZD

CBV CHV

Fig.4-11

-V0

Fig.4-12

Charging

Grid

Cleaning(Blade)

Corona wire

Case


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2 Exposing

The exposing process means that the OPC belt surface is exposed to the laser beam toform an electrostatic latent image.

(1) Structure of Scanner Unit

i) The scanner unit is located as shown in Fig.4-8.

ii) The source of the laser beam is a semiconductor laser.

iii) The laser light is scanned onto the OPC belt by converting the laser light to abeam of light through the lens and reflective mirror to form an electrostaticlatent image.

(2) Process of Exposing (Refer to Fig.4-13.)

i) The OPC belt surface has been charged to the potential -Vo(V) in the chargingprocess.

ii) The laser light is scanned at right angles to the forward direction of the OPCbelt.

iii) High speed switching of the laser is made according to the transmitted imagedata.

iv) The charge of the areas radiated by the laser light is reduced to the potential -VR(V).

v) An invisible electrostatic latent image is formed on the OPC belt as shown inFig. 4-13.

-VR

-VO

Fig.4-13

Charging Exposing


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3 Developing

The developing process means that an electrostatic latent image on the OPC belt ismade visible by depositing toner onto the exposed areas of the OPC belt.

(1) Structure of the Toner Cartridge (Refer to Fig.4-8 & 4.14.)

i) The toner cartridge is located as shown in Fig.4-8.

ii) Four toner cartridges are made available from the top to bottom in the orderblack, yellow, magenta and cyan.

iii) Each color toner is loaded in the corresponding toner cartridge.

(2) Process of Developing (Refer to Fig.4-8, 4-14, 4-15, and 4-16)

i) Toner adheres to the developer roller of the toner cartridge.

Developing is processed by this roller contacting the OPC belt surface.

ii) The developer roller has been biased to the potential -DBV(V). Fig.4-15describes the relationship established between the potential of the toner, thepotential -V

0(V) at the non-exposed area of OPC belt and the potential -VR(V)

on the exposed area of the OPC belt.

iii) Developing is processed by the toner adhering to the OPC belt due to theattraction between the potential of the toner and the potential -VR(V) on theexposed area of the OPC belt. A visible Toner image is formed on the OPCbelt.

iv) No developing takes place on the non-exposed area because the potential ofthe toner and that of the OPC belt is the same polarity and therefore repel eachother.

Fig.4-14

OPC belt

Toner

Developer roller Toner cartridge

TonerElectrostatic latent image


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CBV

DBV

Fig.4-15

YMC K

Fig.4-16

Developerroller

Toner

OPC Belt

Toner (M)

Exposing Developing


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4 First Transfer (Drum)

The first transfer process means that the toner image on the OPC belt is transferred ontothe transfer drum.

(1) Structure of the Transfer Drum (Refer to Fig.4-8.)

i) The drum is located as shown in Fig.4-8.

ii) Material of the drum is aluminum.

iii) Semiconductor rubber is used to provide the drum surface as shown in Fig.4-17.

iv) The transfer drum rotates by contacting and synchronizing with the OPC belt.

Fig.4-17

Transfer Drum

Aluminum

Rubber


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(2) First Transfer Process (Refer to Fig.4-18.)

i) The OPC belt has been through the development process and contacts andsynchronizes with the transfer drum.

ii) The OPC belt has been biased to the potential of -CBV(V). The potential of thetransfer drum is nearly GND.

iii) Toner on the OPC belt is moved onto the transfer drum due to the difference ofpotential between the OPC belt and the transfer drum.

iv) Toner that has been developed by each color in sequence is moved from theOPC belt onto the transfer drum and the color toner images overlap on thetransfer drum.

v) Upon completion of the drum transfer process, the complete toner image istransferred onto paper in the paper transfer process.

Fig.4-18

Residual Charge

Residual Toner

OPC Belt

Belt cleaning(Blade)

Beltdischarging(Erase Lamp)

Drum transferring


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5 Belt Discharging (Erase Lamp)

The belt discharging process means that upon completion of the drum transfer process,an LED light is radiated onto the OPC belt prior to mechanically cleaning the belt to

discharge the residual charge.

(1) Structure of Erase Lamp

i) The erase lamp is located as shown in Fig.4-8.

ii) The light source of the erase lamp is 24 light emitting diodes (LEDs).

(2) Process of Discharging (Refer to Fig.4-19.)

i) Though the toner image was transferred to the transfer drum in the drumtransfer process, there is still a residual charge on the OPC belt.

ii) The residual charge (-VR) on the OPC belt is discharged by the radiation of theerase lamp light prior to cleaning the belt.

Fig.4-19

Drum transferring




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6 Belt Cleaning

The belt cleaning process means that the residual toner adhering to the OPC belt surfaceis mechanically scavenged.

(1) Structure of Belt Cleaning

The blade for the belt cleaning is located relative to the OPC belt cartridge asshown in Fig.4-8.

(2) Process of Belt Cleaning (Refer to Fig.4-20.)

There is residual toner on the OPC belt as it has not been completely transferred inthe drum transfer process.

Residual toner is mechanically scavenged by the blade edge.

The scavenged residual toner is collected in the waste toner pack by the waste

toner feeder.

Fig.4-20



Drum transferring


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7 Second Transfer (Paper)

The second transfer process is where the toner image on the transfer drum is transferredonto the transported paper.

(1) Second Transfer Structure

i) The transfer roller for the paper transfer is located as shown in Fig.4-8.

ii) The transfer roller is normally kept out of contact with the transfer drum until thesecond transfer process starts.

iii) The transfer roller is positively biased by the power supply THV.

iv) The transfer roller is in contact with the transfer drum only in the secondtransfer process.

v) Transported paper passes between the transfer roller and transfer drum.

(2) Second Transfer Process (Refer to Fig.4-21.)

i) Paper is transported and is synchronized with the transfer drum.

ii) The transfer roller operates and is synchronized with the transported paper andis in contact with the transfer drum through the transported paper.

iii) The transported paper passes between the transfer roller and transfer drum.

At this time the positive high voltage (THV) is fed to the transfer roller.

iv) Negatively charged toner on the transfer drum is moved to the positivelycharged paper.

v) The transported paper with the toner transferred to it is moved to the paperdischarging process.

VAC THV

Fig.4-21

Paper Discharger

Transfer Roller Transfer Drum

Toner image

Paper

VAC: Power Supply for Paperdischarging

THV: Power Supply for TransferRoller Bias


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8 Paper Discharging

The paper discharging process is where the transported paper onto which the tonertransfer has been completed is separated from the transfer drum by applying an AC

charge to the paper.

(1) Structure of Paper Discharger (Refer to Fig.4-22.)

i) The AC charger unit for discharge the paper is located as shown in Fig.4-8.

ii) The AC charger unit consists of the case and a charger wire.

iii) A high alternating voltage (VAC) is fed to the AC charger unit.

(2) Process of Paper Discharging (Refer to Fig.4-22.)

i) The paper adheres to the transfer drum in the transfer process.

ii) The paper is neutralized (discharged) in terms of any electrical charge by the

alternate voltage generated by the discharger.iii) Paper is separated from the transfer drum and subsequently transported to the

fusing (fixing) process.

VAC THV

Fig.4-22

Paper Discharger

Transfer RollerTransfer Drum

Toner

Paper


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9 Drum Cleaning

The drum cleaning process is where the residual toner on the transfer drum is removed.

(1) Structure of Drum Cleaning (Refer to Fig.4-23.)

i) The drum cleaning unit is located as shown in Fig.4-8.

ii) The drum cleaning brush is a semiconductor type so that the brush can cleanthe surface of the rotating transfer drum. The Drum cleaning brush is kept outof contact with the transfer drum when the print image on the transfer drum isbeing created.

iii) The drum cleaning roller is positively biased by the positive voltage FCBV(V).

iv) FCBV(V) is fed to the cleaning brush in contact with the roller and the cleaningbrush is self-biased by the resistance of the brush.

v) The drum cleaning roller rotates in contact with the drum cleaning brush.

(2) Process of Belt Cleaning (Refer to Fig.4-23.)

i) There is residual toner on the surface of the transfer drum after the papertransfer process.

ii) The Drum cleaning brush is positively self-biased and so the negativelycharged residual toner is removed from the surface of the transfer drum ontothe drum cleaning brush.

iii) The Drum cleaning roller has been biased to the positive voltage FCBV(V). Asthe cleaning brush rotates, the residual toner absorbed into the brush from thetransfer drum is attracted by the positive FCBV(V) voltage on the roller andadheres to the surface of the drum cleaning roller.

iv) Waste toner adhering to the surface of the drum cleaning roller is scavenged by

the cleaning blade and collected into the waste toner pack by the waste tonerfeeder.

FCBV

Fig.4-23

FCBV: Cleaning Roller

Power Supply for FuserCleaner Bias

Transfer Drum

Fuser Cleaner

West Toner Feeder

Drum Cleaning Unit

Cleaning Brush

ResidualToner


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1.2 Scanning System

This printer employs a semiconductor laser diode as a light source. This laser diode isswitched according to the transmitted image data (video signal).

The generated laser light scans over the OPC belt through a polygon mirror and lens, by

which method electrostatic latent images will be formed on the OPC belt.

(1) Structure of the Scanning System (Refer to Fig.4-24.)

The scanner unit is located as shown in Fig.4-8.

The scanner unit consists of the following parts;

c Laser Unit: Light emitting source incorporating a laser diode.d Cylinder Lens: Condenser for the laser beam.e Polygon Mirror: Hexahedral mirror for scanning the laser beam.f F-6Lens: Focus lens for the laser beam.g Scanner Motor: Motor to rotate the polygon mirror.h Mirror: Reflecting mirror for the laser beam path.i LDC: Laser diode control circuit.j PD: Beam detector.k BTD Mirror: Beam timing detector mirror to guide the laser beam

to the PD sensor.

2

4

5

9

8

7

1 2 ' 3

6

Fig.4-24


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(2) Specification:

Specification of the Scanner Unit is as follows;

Item Specifications

Rated Output of Laser Diode 5mW.Wave Length of Laser Beam Approx.785nm.

Scanning Density 600dpi

Scanning Width 314mm

Scanner Motor speed 35,904rpm

Number of Polygon Mirror Faces 6


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1.3 Paper Transportation System

(1) Outline

This printer employs automatic paper feeding from the media cassette.

When toner images are formed on the transfer drum through the operations of the

print system and transfer system, paper is fed by the pick-up roller and transportedto the register roller. The transported paper is further transported to the transfer,fuser and exit parts by the register roller synchronizing with the rotation of thetransfer drum.

(2) Structure of Paper Transportation System (Refer to Fig.4-25.)

The paper transportation system consists of the following parts;

c Media Cassette: Case to accommodate paper to be fedautomatically.

d Paper Pick-up Roller: Roller to feed sheets of paper one by one,preventing multi-feed.

e Registration Roller: Roller to transport papers synchronized withthe transfer drum.

f Transfer System: Print processing part consisting of transferdrum and transfer roller to transfer the tonerimage onto the paper.

g Paper Discharger Unit: Corona generator to generate AC corona forseparating paper from the transfer drum.

h Fusing Unit: Mechanical part to fuse the toner image withheat rollers and fix it on the paper.

i Paper Exit Unit: Mechanical part to exit the fused paper fromthe printer.j Paper Exit Roller: Roller to feed paper from the printer.


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5

4

3

2

1

87

6

c Media Cassette g Paper Discharger Unitd Paper Pick-up Roller h Fusing Unite Registration Roller i Paper Exit Unitf Transfer Roller j Paper Exit Roller

Fig.4-25


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1.4 Fusing Unit

The fusing unit employs a thermal fusing system using heater lamps in the rollers. Papercarrying the combined toner image passes between the heat rollers. Heat and pressure isapplied to the paper when passing between the heat rollers so that the toner image ismelted and fused onto the paper.

(1) Structure

brother hl-2600cn service manual

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